Comtech EF Data LCS-4 - Manual (Page 17)

LCS-4 L-Band Combiner Switch Revision 1
Introduction MN/LCS4.IOM
L-Band
Σ
&
DC Blk
L-Band
Σ
&
DC Blk
FSK
Select
FSK
Select
DC, FSK, 10 MHz
Insertion
DC, FSK, 10 MHz
Insertion
FSK
BUC PS B
FSK
10 MHz B
DC, FSK, 10 MHz
Insertion
DC, FSK, 10 MHz
Insertion
BUC PS A
FSK
10 MHz A
DC, 10 MHz
Insertion
DC, 10 MHz
Insertion LNB PS B
DC, 10 MHz
Insertion
DC, 10 MHz
Insertion
LNB PS A
10 MHz A
10 MHz B
L-Band
÷
&
DC Blk
L-Band
÷
&
DC Blk
BUC PS A BUC PS A
BUC PS B BUC PS B
LNB PS A LNB PS A
LNB PS B LNB PS B
Unit PS A Unit PS A
Unit PS B Unit PS B
RF Switch
PS & Driver
RF Switch
PS & Driver
Host
485 / 232
Host
485 / 232
BUC Control
& Sense
LNB Control
& Sense
Logic &
Control Logic &
Control
BUC A BUC A
BUC B BUC B
LNB A LNB A
LNB B
LNB B
L-Band
Modulators
4 x Type N
L-Band
Demodulators
4 x Type F
Prime
Power A
Prime
Power B
Diode
Or
Diode
Or
H
ot
S
w
ap
H
ot
S
w
ap
Mod I/O Mod I/O
Fan
Monitors
Fan
Monitors
LCS-4
Fault Relay
Status
Fault Relay
Status
Int / Ext
10 MHz
VCXO
PLL
Int / Ext
10 MHz
VCXO
PLL
10 MHz A
10 MHz B
10 MHz
To
Modems
10 MHz
Ext
Front
Panel
Outdoor
Equipment
Remote
Port
BUC / LNB
Fault Input
BUC / LNB
Fault Input
SPDT SPDT
Tx
Attenuator
Internal FSK
UPC Interface
Figure 1-2. L-Band Multi-Modem Module Block Diagram (Redundancy)
1–3